Die for shaping nuts



J. HpsTEfiNBERGHL N Die for Shaping Nuts. 22.6938i r I Patented April 27,1880.

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UNITED STATES PATENT OFFICE.

JAMES H. STERNBEBGH, OF READING, PENNSYLVANIA.

DIE FOR SHAPING NUTS.

SPECIFICATION forming part of Letters Patent No. 226,938, dated April 27, 1880.

Application filed January 23, 1880.

To all whom it may concern:

Be it known that I, JAMES HERVEY STERN- BERGH, of Reading, in the county of Berks and State of Pennsylvania, have invented a new and useful Improvement in Dies for Shaping Metal Nuts while hot in a die-box during the process of pressing and punching; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part of this specification, in which Figure l is a sectional elevation. Fig. 2 is a perspective View of the nut to be produced. Fig. 3 is a perspective view of the principal die used in producing the nut.

The object of my invention is to produce nuts having one or more inclined rabbeted surfaces terminating in a vertical face, a, during the process of manufacture by a practical and economical method.

B represents a die-box, in whose cavity the hot metal is forced by the centrally-perforated die N in order to be compressed into symmetrical shape against the centrally-perforated crowning-die E and pierced by the punch s.

The dies N and E are made to fit the cavity in the die-box B, their perforations registering, so that the piercing-punch 8 may pass freely through both.

I form the end of the die N, Fig. 3, with circular inclined projections h h, terminating in vertical faces 0 0, corresponding with the depression which I Wish to produce on the nut shown in Fig. 2.

I am aware that a round die has been shown, as in Patent No. 221,299, with circular inclined rabbets intended for punching the hole and formingthe depression in the nut at one stroke; but in practice this Will be found inconvenient and expensive.

Obviously the die N may be square, hexago- JAMES HERVFlY S'IERNBERGH.

Witnesses:

JAMES Loan, DAVIS P. HARDEN. 

